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Finding the Fourth Proportional to 32.18, 48 and 31.19

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Solution

The fourth proportional to 32.18, 48 and 31.19 is: 46.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.18 : 48 = 31.19 : x
  2. Step 2: Convert to fraction form
    32.18/48 = 31.19/x
  3. Step 3: Cross multiply
    32.18x = 48 × 31.19
  4. Step 4: Simplify right side
    32.18x = 1,497.24
  5. Step 5: Solve for x
    x = 1,497.24/32.18
  6. Step 6: Final answer
    x = 46.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.