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Finding the Fourth Proportional to 555.32, 766.03 and 345.53

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Solution

The fourth proportional to 555.32, 766.03 and 345.53 is: 476.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.32 : 766.03 = 345.53 : x
  2. Step 2: Convert to fraction form
    555.32/766.03 = 345.53/x
  3. Step 3: Cross multiply
    555.32x = 766.03 × 345.53
  4. Step 4: Simplify right side
    555.32x = 264,682.52
  5. Step 5: Solve for x
    x = 264,682.52/555.32
  6. Step 6: Final answer
    x = 476.63

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.