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Finding the Fourth Proportional to 702.18, 1,049.60 and 495.36

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Solution

The fourth proportional to 702.18, 1,049.60 and 495.36 is: 740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.18 : 1,049.60 = 495.36 : x
  2. Step 2: Convert to fraction form
    702.18/1,049.60 = 495.36/x
  3. Step 3: Cross multiply
    702.18x = 1,049.60 × 495.36
  4. Step 4: Simplify right side
    702.18x = 519,927.38
  5. Step 5: Solve for x
    x = 519,927.38/702.18
  6. Step 6: Final answer
    x = 740.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.