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Finding the Fourth Proportional to 561.30, 772.29 and 548.34

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Solution

The fourth proportional to 561.30, 772.29 and 548.34 is: 754.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.30 : 772.29 = 548.34 : x
  2. Step 2: Convert to fraction form
    561.30/772.29 = 548.34/x
  3. Step 3: Cross multiply
    561.30x = 772.29 × 548.34
  4. Step 4: Simplify right side
    561.30x = 423,477.50
  5. Step 5: Solve for x
    x = 423,477.50/561.30
  6. Step 6: Final answer
    x = 754.46

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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.