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Finding the Fourth Proportional to 988.52, 1,483.70 and 501.91

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Solution

The fourth proportional to 988.52, 1,483.70 and 501.91 is: 753.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.52 : 1,483.70 = 501.91 : x
  2. Step 2: Convert to fraction form
    988.52/1,483.70 = 501.91/x
  3. Step 3: Cross multiply
    988.52x = 1,483.70 × 501.91
  4. Step 4: Simplify right side
    988.52x = 744,677.65
  5. Step 5: Solve for x
    x = 744,677.65/988.52
  6. Step 6: Final answer
    x = 753.33

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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.