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Finding the Fourth Proportional to 916.03, 1,373.48 and 454.26

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Solution

The fourth proportional to 916.03, 1,373.48 and 454.26 is: 681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.03 : 1,373.48 = 454.26 : x
  2. Step 2: Convert to fraction form
    916.03/1,373.48 = 454.26/x
  3. Step 3: Cross multiply
    916.03x = 1,373.48 × 454.26
  4. Step 4: Simplify right side
    916.03x = 623,915.16
  5. Step 5: Solve for x
    x = 623,915.16/916.03
  6. Step 6: Final answer
    x = 681.10

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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.