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Finding the Fourth Proportional to 555.48, 766.13 and 518.22

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Solution

The fourth proportional to 555.48, 766.13 and 518.22 is: 714.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.48 : 766.13 = 518.22 : x
  2. Step 2: Convert to fraction form
    555.48/766.13 = 518.22/x
  3. Step 3: Cross multiply
    555.48x = 766.13 × 518.22
  4. Step 4: Simplify right side
    555.48x = 397,021.30
  5. Step 5: Solve for x
    x = 397,021.30/555.48
  6. Step 6: Final answer
    x = 714.74

Related Problems

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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.