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Finding the Fourth Proportional to 1,572.73, 2,357.47 and 707.65

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Solution

The fourth proportional to 1,572.73, 2,357.47 and 707.65 is: 1,060.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.73 : 2,357.47 = 707.65 : x
  2. Step 2: Convert to fraction form
    1,572.73/2,357.47 = 707.65/x
  3. Step 3: Cross multiply
    1,572.73x = 2,357.47 × 707.65
  4. Step 4: Simplify right side
    1,572.73x = 1,668,263.65
  5. Step 5: Solve for x
    x = 1,668,263.65/1,572.73
  6. Step 6: Final answer
    x = 1,060.74

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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.