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Finding the Fourth Proportional to 1,527, 2,290.62 and 1,118.72

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Solution

The fourth proportional to 1,527, 2,290.62 and 1,118.72 is: 1,678.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527 : 2,290.62 = 1,118.72 : x
  2. Step 2: Convert to fraction form
    1,527/2,290.62 = 1,118.72/x
  3. Step 3: Cross multiply
    1,527x = 2,290.62 × 1,118.72
  4. Step 4: Simplify right side
    1,527x = 2,562,550.95
  5. Step 5: Solve for x
    x = 2,562,550.95/1,527
  6. Step 6: Final answer
    x = 1,678.16

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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.