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Finding the Fourth Proportional to 662.04, 913.56 and 429

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Solution

The fourth proportional to 662.04, 913.56 and 429 is: 591.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.04 : 913.56 = 429 : x
  2. Step 2: Convert to fraction form
    662.04/913.56 = 429/x
  3. Step 3: Cross multiply
    662.04x = 913.56 × 429
  4. Step 4: Simplify right side
    662.04x = 391,917.24
  5. Step 5: Solve for x
    x = 391,917.24/662.04
  6. Step 6: Final answer
    x = 591.98

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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.