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Finding the Fourth Proportional to 669.74, 924.03 and 462.86

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Solution

The fourth proportional to 669.74, 924.03 and 462.86 is: 638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.74 : 924.03 = 462.86 : x
  2. Step 2: Convert to fraction form
    669.74/924.03 = 462.86/x
  3. Step 3: Cross multiply
    669.74x = 924.03 × 462.86
  4. Step 4: Simplify right side
    669.74x = 427,696.53
  5. Step 5: Solve for x
    x = 427,696.53/669.74
  6. Step 6: Final answer
    x = 638.60

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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.