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Finding the Fourth Proportional to 945.40, 1,417.62 and 482.92

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Solution

The fourth proportional to 945.40, 1,417.62 and 482.92 is: 724.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    945.40 : 1,417.62 = 482.92 : x
  2. Step 2: Convert to fraction form
    945.40/1,417.62 = 482.92/x
  3. Step 3: Cross multiply
    945.40x = 1,417.62 × 482.92
  4. Step 4: Simplify right side
    945.40x = 684,597.05
  5. Step 5: Solve for x
    x = 684,597.05/945.40
  6. Step 6: Final answer
    x = 724.13

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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.