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Finding the Fourth Proportional to 153.02, 210.66 and 147.56

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Solution

The fourth proportional to 153.02, 210.66 and 147.56 is: 203.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.02 : 210.66 = 147.56 : x
  2. Step 2: Convert to fraction form
    153.02/210.66 = 147.56/x
  3. Step 3: Cross multiply
    153.02x = 210.66 × 147.56
  4. Step 4: Simplify right side
    153.02x = 31,084.99
  5. Step 5: Solve for x
    x = 31,084.99/153.02
  6. Step 6: Final answer
    x = 203.14

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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.