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Finding the Fourth Proportional to 157.30, 235.98 and 49.10

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Solution

The fourth proportional to 157.30, 235.98 and 49.10 is: 73.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.30 : 235.98 = 49.10 : x
  2. Step 2: Convert to fraction form
    157.30/235.98 = 49.10/x
  3. Step 3: Cross multiply
    157.30x = 235.98 × 49.10
  4. Step 4: Simplify right side
    157.30x = 11,585.44
  5. Step 5: Solve for x
    x = 11,585.44/157.30
  6. Step 6: Final answer
    x = 73.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.