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Finding the Fourth Proportional to 758.15, 1,046.08 and 463.61

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Solution

The fourth proportional to 758.15, 1,046.08 and 463.61 is: 639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.15 : 1,046.08 = 463.61 : x
  2. Step 2: Convert to fraction form
    758.15/1,046.08 = 463.61/x
  3. Step 3: Cross multiply
    758.15x = 1,046.08 × 463.61
  4. Step 4: Simplify right side
    758.15x = 484,973.15
  5. Step 5: Solve for x
    x = 484,973.15/758.15
  6. Step 6: Final answer
    x = 639.68

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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.