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Finding the Fourth Proportional to 508.77, 702.02 and 298.91

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Solution

The fourth proportional to 508.77, 702.02 and 298.91 is: 412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.77 : 702.02 = 298.91 : x
  2. Step 2: Convert to fraction form
    508.77/702.02 = 298.91/x
  3. Step 3: Cross multiply
    508.77x = 702.02 × 298.91
  4. Step 4: Simplify right side
    508.77x = 209,843.30
  5. Step 5: Solve for x
    x = 209,843.30/508.77
  6. Step 6: Final answer
    x = 412.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.