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Finding the Fourth Proportional to 751.08, 1,126.28 and 318.18

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Solution

The fourth proportional to 751.08, 1,126.28 and 318.18 is: 477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    751.08 : 1,126.28 = 318.18 : x
  2. Step 2: Convert to fraction form
    751.08/1,126.28 = 318.18/x
  3. Step 3: Cross multiply
    751.08x = 1,126.28 × 318.18
  4. Step 4: Simplify right side
    751.08x = 358,359.77
  5. Step 5: Solve for x
    x = 358,359.77/751.08
  6. Step 6: Final answer
    x = 477.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.