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Finding the Fourth Proportional to 602.91, 831.54 and 462.85

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Solution

The fourth proportional to 602.91, 831.54 and 462.85 is: 638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.91 : 831.54 = 462.85 : x
  2. Step 2: Convert to fraction form
    602.91/831.54 = 462.85/x
  3. Step 3: Cross multiply
    602.91x = 831.54 × 462.85
  4. Step 4: Simplify right side
    602.91x = 384,878.29
  5. Step 5: Solve for x
    x = 384,878.29/602.91
  6. Step 6: Final answer
    x = 638.37

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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.