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Finding the Fourth Proportional to 894.67, 1,234.10 and 558.76

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Solution

The fourth proportional to 894.67, 1,234.10 and 558.76 is: 770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.67 : 1,234.10 = 558.76 : x
  2. Step 2: Convert to fraction form
    894.67/1,234.10 = 558.76/x
  3. Step 3: Cross multiply
    894.67x = 1,234.10 × 558.76
  4. Step 4: Simplify right side
    894.67x = 689,563.20
  5. Step 5: Solve for x
    x = 689,563.20/894.67
  6. Step 6: Final answer
    x = 770.75

Related Problems

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Half scale
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Double scale
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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.