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Finding the Fourth Proportional to 750.58, 1,128.30 and 463.84

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Solution

The fourth proportional to 750.58, 1,128.30 and 463.84 is: 697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.58 : 1,128.30 = 463.84 : x
  2. Step 2: Convert to fraction form
    750.58/1,128.30 = 463.84/x
  3. Step 3: Cross multiply
    750.58x = 1,128.30 × 463.84
  4. Step 4: Simplify right side
    750.58x = 523,350.67
  5. Step 5: Solve for x
    x = 523,350.67/750.58
  6. Step 6: Final answer
    x = 697.26

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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.