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Finding the Fourth Proportional to 662.13, 913.74 and 429.66

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Solution

The fourth proportional to 662.13, 913.74 and 429.66 is: 592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.13 : 913.74 = 429.66 : x
  2. Step 2: Convert to fraction form
    662.13/913.74 = 429.66/x
  3. Step 3: Cross multiply
    662.13x = 913.74 × 429.66
  4. Step 4: Simplify right side
    662.13x = 392,597.53
  5. Step 5: Solve for x
    x = 392,597.53/662.13
  6. Step 6: Final answer
    x = 592.93

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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.