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Finding the Fourth Proportional to 1,148.07, 1,721.09 and 562.76

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Solution

The fourth proportional to 1,148.07, 1,721.09 and 562.76 is: 843.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.07 : 1,721.09 = 562.76 : x
  2. Step 2: Convert to fraction form
    1,148.07/1,721.09 = 562.76/x
  3. Step 3: Cross multiply
    1,148.07x = 1,721.09 × 562.76
  4. Step 4: Simplify right side
    1,148.07x = 968,549.19
  5. Step 5: Solve for x
    x = 968,549.19/1,148.07
  6. Step 6: Final answer
    x = 843.63

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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.