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Finding the Fourth Proportional to 906.56, 1,356.56 and 560

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Solution

The fourth proportional to 906.56, 1,356.56 and 560 is: 837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.56 : 1,356.56 = 560 : x
  2. Step 2: Convert to fraction form
    906.56/1,356.56 = 560/x
  3. Step 3: Cross multiply
    906.56x = 1,356.56 × 560
  4. Step 4: Simplify right side
    906.56x = 759,673.60
  5. Step 5: Solve for x
    x = 759,673.60/906.56
  6. Step 6: Final answer
    x = 837.97

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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.