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Finding the Fourth Proportional to 758.07, 1,045.68 and 462.83

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Solution

The fourth proportional to 758.07, 1,045.68 and 462.83 is: 638.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.07 : 1,045.68 = 462.83 : x
  2. Step 2: Convert to fraction form
    758.07/1,045.68 = 462.83/x
  3. Step 3: Cross multiply
    758.07x = 1,045.68 × 462.83
  4. Step 4: Simplify right side
    758.07x = 483,966.85
  5. Step 5: Solve for x
    x = 483,966.85/758.07
  6. Step 6: Final answer
    x = 638.42

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1.5x scale

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.