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Finding the Fourth Proportional to 32.70, 49.38 and 32.40

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Solution

The fourth proportional to 32.70, 49.38 and 32.40 is: 48.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.70 : 49.38 = 32.40 : x
  2. Step 2: Convert to fraction form
    32.70/49.38 = 32.40/x
  3. Step 3: Cross multiply
    32.70x = 49.38 × 32.40
  4. Step 4: Simplify right side
    32.70x = 1,599.91
  5. Step 5: Solve for x
    x = 1,599.91/32.70
  6. Step 6: Final answer
    x = 48.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.