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Finding the Fourth Proportional to 876.05, 1,208.96 and 483.10

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Solution

The fourth proportional to 876.05, 1,208.96 and 483.10 is: 666.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    876.05 : 1,208.96 = 483.10 : x
  2. Step 2: Convert to fraction form
    876.05/1,208.96 = 483.10/x
  3. Step 3: Cross multiply
    876.05x = 1,208.96 × 483.10
  4. Step 4: Simplify right side
    876.05x = 584,044.95
  5. Step 5: Solve for x
    x = 584,044.95/876.05
  6. Step 6: Final answer
    x = 666.68

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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.