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Finding the Fourth Proportional to 750.25, 1,125.58 and 317.44

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Solution

The fourth proportional to 750.25, 1,125.58 and 317.44 is: 476.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.25 : 1,125.58 = 317.44 : x
  2. Step 2: Convert to fraction form
    750.25/1,125.58 = 317.44/x
  3. Step 3: Cross multiply
    750.25x = 1,125.58 × 317.44
  4. Step 4: Simplify right side
    750.25x = 357,304.12
  5. Step 5: Solve for x
    x = 357,304.12/750.25
  6. Step 6: Final answer
    x = 476.25

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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.