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Finding the Fourth Proportional to 743.81, 1,026.41 and 429.11

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Solution

The fourth proportional to 743.81, 1,026.41 and 429.11 is: 592.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.81 : 1,026.41 = 429.11 : x
  2. Step 2: Convert to fraction form
    743.81/1,026.41 = 429.11/x
  3. Step 3: Cross multiply
    743.81x = 1,026.41 × 429.11
  4. Step 4: Simplify right side
    743.81x = 440,440.65
  5. Step 5: Solve for x
    x = 440,440.65/743.81
  6. Step 6: Final answer
    x = 592.14

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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.