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Finding the Fourth Proportional to 943.24, 1,413.18 and 654.12

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Solution

The fourth proportional to 943.24, 1,413.18 and 654.12 is: 980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.24 : 1,413.18 = 654.12 : x
  2. Step 2: Convert to fraction form
    943.24/1,413.18 = 654.12/x
  3. Step 3: Cross multiply
    943.24x = 1,413.18 × 654.12
  4. Step 4: Simplify right side
    943.24x = 924,389.30
  5. Step 5: Solve for x
    x = 924,389.30/943.24
  6. Step 6: Final answer
    x = 980.01

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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.