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Finding the Fourth Proportional to 538.18, 807.46 and 245.75

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Solution

The fourth proportional to 538.18, 807.46 and 245.75 is: 368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    538.18 : 807.46 = 245.75 : x
  2. Step 2: Convert to fraction form
    538.18/807.46 = 245.75/x
  3. Step 3: Cross multiply
    538.18x = 807.46 × 245.75
  4. Step 4: Simplify right side
    538.18x = 198,428.64
  5. Step 5: Solve for x
    x = 198,428.64/538.18
  6. Step 6: Final answer
    x = 368.70

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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.