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Finding the Fourth Proportional to 210.02, 315.03 and 101.66

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Solution

The fourth proportional to 210.02, 315.03 and 101.66 is: 152.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.02 : 315.03 = 101.66 : x
  2. Step 2: Convert to fraction form
    210.02/315.03 = 101.66/x
  3. Step 3: Cross multiply
    210.02x = 315.03 × 101.66
  4. Step 4: Simplify right side
    210.02x = 32,025.95
  5. Step 5: Solve for x
    x = 32,025.95/210.02
  6. Step 6: Final answer
    x = 152.49

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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.