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Finding the Fourth Proportional to 1,027.34, 1,417.68 and 561.59

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Solution

The fourth proportional to 1,027.34, 1,417.68 and 561.59 is: 774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.34 : 1,417.68 = 561.59 : x
  2. Step 2: Convert to fraction form
    1,027.34/1,417.68 = 561.59/x
  3. Step 3: Cross multiply
    1,027.34x = 1,417.68 × 561.59
  4. Step 4: Simplify right side
    1,027.34x = 796,154.91
  5. Step 5: Solve for x
    x = 796,154.91/1,027.34
  6. Step 6: Final answer
    x = 774.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.