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Finding the Fourth Proportional to 215.10, 322.47 and 151.02

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Solution

The fourth proportional to 215.10, 322.47 and 151.02 is: 226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.10 : 322.47 = 151.02 : x
  2. Step 2: Convert to fraction form
    215.10/322.47 = 151.02/x
  3. Step 3: Cross multiply
    215.10x = 322.47 × 151.02
  4. Step 4: Simplify right side
    215.10x = 48,699.42
  5. Step 5: Solve for x
    x = 48,699.42/215.10
  6. Step 6: Final answer
    x = 226.40

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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.