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Finding the Fourth Proportional to 909.36, 1,254.30 and 560.22

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Solution

The fourth proportional to 909.36, 1,254.30 and 560.22 is: 772.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    909.36 : 1,254.30 = 560.22 : x
  2. Step 2: Convert to fraction form
    909.36/1,254.30 = 560.22/x
  3. Step 3: Cross multiply
    909.36x = 1,254.30 × 560.22
  4. Step 4: Simplify right side
    909.36x = 702,683.95
  5. Step 5: Solve for x
    x = 702,683.95/909.36
  6. Step 6: Final answer
    x = 772.72

Related Problems

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Half scale
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Double scale
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1.5x scale

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.