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Finding the Fourth Proportional to 508.80, 702.76 and 368.69

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Solution

The fourth proportional to 508.80, 702.76 and 368.69 is: 509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.80 : 702.76 = 368.69 : x
  2. Step 2: Convert to fraction form
    508.80/702.76 = 368.69/x
  3. Step 3: Cross multiply
    508.80x = 702.76 × 368.69
  4. Step 4: Simplify right side
    508.80x = 259,100.58
  5. Step 5: Solve for x
    x = 259,100.58/508.80
  6. Step 6: Final answer
    x = 509.24

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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.