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Finding the Fourth Proportional to 901.18, 1,350.28 and 413.16

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Solution

The fourth proportional to 901.18, 1,350.28 and 413.16 is: 619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.18 : 1,350.28 = 413.16 : x
  2. Step 2: Convert to fraction form
    901.18/1,350.28 = 413.16/x
  3. Step 3: Cross multiply
    901.18x = 1,350.28 × 413.16
  4. Step 4: Simplify right side
    901.18x = 557,881.68
  5. Step 5: Solve for x
    x = 557,881.68/901.18
  6. Step 6: Final answer
    x = 619.06

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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.