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Finding the Fourth Proportional to 1,159.84, 1,741.68 and 672.16

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Solution

The fourth proportional to 1,159.84, 1,741.68 and 672.16 is: 1,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159.84 : 1,741.68 = 672.16 : x
  2. Step 2: Convert to fraction form
    1,159.84/1,741.68 = 672.16/x
  3. Step 3: Cross multiply
    1,159.84x = 1,741.68 × 672.16
  4. Step 4: Simplify right side
    1,159.84x = 1,170,687.63
  5. Step 5: Solve for x
    x = 1,170,687.63/1,159.84
  6. Step 6: Final answer
    x = 1,009.35

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1.5x scale

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.