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Finding the Fourth Proportional to 1,601.64, 2,404.15 and 909.66

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Solution

The fourth proportional to 1,601.64, 2,404.15 and 909.66 is: 1,365.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,601.64 : 2,404.15 = 909.66 : x
  2. Step 2: Convert to fraction form
    1,601.64/2,404.15 = 909.66/x
  3. Step 3: Cross multiply
    1,601.64x = 2,404.15 × 909.66
  4. Step 4: Simplify right side
    1,601.64x = 2,186,965.83
  5. Step 5: Solve for x
    x = 2,186,965.83/1,601.64
  6. Step 6: Final answer
    x = 1,365.45

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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.