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Finding the Fourth Proportional to 591.74, 885.75 and 429.38

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Solution

The fourth proportional to 591.74, 885.75 and 429.38 is: 642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.74 : 885.75 = 429.38 : x
  2. Step 2: Convert to fraction form
    591.74/885.75 = 429.38/x
  3. Step 3: Cross multiply
    591.74x = 885.75 × 429.38
  4. Step 4: Simplify right side
    591.74x = 380,323.34
  5. Step 5: Solve for x
    x = 380,323.34/591.74
  6. Step 6: Final answer
    x = 642.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.