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Finding the Fourth Proportional to 916.18, 1,373.98 and 483.10

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Solution

The fourth proportional to 916.18, 1,373.98 and 483.10 is: 724.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.18 : 1,373.98 = 483.10 : x
  2. Step 2: Convert to fraction form
    916.18/1,373.98 = 483.10/x
  3. Step 3: Cross multiply
    916.18x = 1,373.98 × 483.10
  4. Step 4: Simplify right side
    916.18x = 663,769.74
  5. Step 5: Solve for x
    x = 663,769.74/916.18
  6. Step 6: Final answer
    x = 724.50

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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.