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Finding the Fourth Proportional to 170.08, 253.88 and 147.40

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Solution

The fourth proportional to 170.08, 253.88 and 147.40 is: 220.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.08 : 253.88 = 147.40 : x
  2. Step 2: Convert to fraction form
    170.08/253.88 = 147.40/x
  3. Step 3: Cross multiply
    170.08x = 253.88 × 147.40
  4. Step 4: Simplify right side
    170.08x = 37,421.91
  5. Step 5: Solve for x
    x = 37,421.91/170.08
  6. Step 6: Final answer
    x = 220.03

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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.