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Finding the Fourth Proportional to 873.38, 1,204.86 and 558.49

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Solution

The fourth proportional to 873.38, 1,204.86 and 558.49 is: 770.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.38 : 1,204.86 = 558.49 : x
  2. Step 2: Convert to fraction form
    873.38/1,204.86 = 558.49/x
  3. Step 3: Cross multiply
    873.38x = 1,204.86 × 558.49
  4. Step 4: Simplify right side
    873.38x = 672,902.26
  5. Step 5: Solve for x
    x = 672,902.26/873.38
  6. Step 6: Final answer
    x = 770.46

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.