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Finding the Fourth Proportional to 525.19, 724.79 and 292.31

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Solution

The fourth proportional to 525.19, 724.79 and 292.31 is: 403.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.19 : 724.79 = 292.31 : x
  2. Step 2: Convert to fraction form
    525.19/724.79 = 292.31/x
  3. Step 3: Cross multiply
    525.19x = 724.79 × 292.31
  4. Step 4: Simplify right side
    525.19x = 211,863.36
  5. Step 5: Solve for x
    x = 211,863.36/525.19
  6. Step 6: Final answer
    x = 403.40

Related Problems

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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.