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Finding the Fourth Proportional to 739.36, 1,020.36 and 424.66

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Solution

The fourth proportional to 739.36, 1,020.36 and 424.66 is: 586.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.36 : 1,020.36 = 424.66 : x
  2. Step 2: Convert to fraction form
    739.36/1,020.36 = 424.66/x
  3. Step 3: Cross multiply
    739.36x = 1,020.36 × 424.66
  4. Step 4: Simplify right side
    739.36x = 433,306.08
  5. Step 5: Solve for x
    x = 433,306.08/739.36
  6. Step 6: Final answer
    x = 586.06

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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.