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Finding the Fourth Proportional to 508.04, 700.42 and 388.61

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Solution

The fourth proportional to 508.04, 700.42 and 388.61 is: 535.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.04 : 700.42 = 388.61 : x
  2. Step 2: Convert to fraction form
    508.04/700.42 = 388.61/x
  3. Step 3: Cross multiply
    508.04x = 700.42 × 388.61
  4. Step 4: Simplify right side
    508.04x = 272,184.77
  5. Step 5: Solve for x
    x = 272,184.77/508.04
  6. Step 6: Final answer
    x = 535.76

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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.