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Finding the Fourth Proportional to 145.50, 200.62 and 124.50

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Solution

The fourth proportional to 145.50, 200.62 and 124.50 is: 171.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.50 : 200.62 = 124.50 : x
  2. Step 2: Convert to fraction form
    145.50/200.62 = 124.50/x
  3. Step 3: Cross multiply
    145.50x = 200.62 × 124.50
  4. Step 4: Simplify right side
    145.50x = 24,977.19
  5. Step 5: Solve for x
    x = 24,977.19/145.50
  6. Step 6: Final answer
    x = 171.66

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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.