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Finding the Fourth Proportional to 1,332.40, 1,995.36 and 753.52

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Solution

The fourth proportional to 1,332.40, 1,995.36 and 753.52 is: 1,128.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.40 : 1,995.36 = 753.52 : x
  2. Step 2: Convert to fraction form
    1,332.40/1,995.36 = 753.52/x
  3. Step 3: Cross multiply
    1,332.40x = 1,995.36 × 753.52
  4. Step 4: Simplify right side
    1,332.40x = 1,503,543.67
  5. Step 5: Solve for x
    x = 1,503,543.67/1,332.40
  6. Step 6: Final answer
    x = 1,128.45

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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.