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Finding the Fourth Proportional to 1,262.01, 1,888.62 and 999.71

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Solution

The fourth proportional to 1,262.01, 1,888.62 and 999.71 is: 1,496.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.01 : 1,888.62 = 999.71 : x
  2. Step 2: Convert to fraction form
    1,262.01/1,888.62 = 999.71/x
  3. Step 3: Cross multiply
    1,262.01x = 1,888.62 × 999.71
  4. Step 4: Simplify right side
    1,262.01x = 1,888,062.86
  5. Step 5: Solve for x
    x = 1,888,062.86/1,262.01
  6. Step 6: Final answer
    x = 1,496.08

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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.