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Finding the Fourth Proportional to 758.39, 1,136.56 and 483.87

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Solution

The fourth proportional to 758.39, 1,136.56 and 483.87 is: 725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.39 : 1,136.56 = 483.87 : x
  2. Step 2: Convert to fraction form
    758.39/1,136.56 = 483.87/x
  3. Step 3: Cross multiply
    758.39x = 1,136.56 × 483.87
  4. Step 4: Simplify right side
    758.39x = 549,949.89
  5. Step 5: Solve for x
    x = 549,949.89/758.39
  6. Step 6: Final answer
    x = 725.16

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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.