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Finding the Fourth Proportional to 11.32, 15.62 and 9.16

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Solution

The fourth proportional to 11.32, 15.62 and 9.16 is: 12.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.32 : 15.62 = 9.16 : x
  2. Step 2: Convert to fraction form
    11.32/15.62 = 9.16/x
  3. Step 3: Cross multiply
    11.32x = 15.62 × 9.16
  4. Step 4: Simplify right side
    11.32x = 143.08
  5. Step 5: Solve for x
    x = 143.08/11.32
  6. Step 6: Final answer
    x = 12.64

Related Problems

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1.5x scale

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.