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Finding the Fourth Proportional to 526.76, 726.90 and 293.88

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Solution

The fourth proportional to 526.76, 726.90 and 293.88 is: 405.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.76 : 726.90 = 293.88 : x
  2. Step 2: Convert to fraction form
    526.76/726.90 = 293.88/x
  3. Step 3: Cross multiply
    526.76x = 726.90 × 293.88
  4. Step 4: Simplify right side
    526.76x = 213,621.37
  5. Step 5: Solve for x
    x = 213,621.37/526.76
  6. Step 6: Final answer
    x = 405.54

Related Problems

Find fourth proportional to 263.38, 363.45 and 146.94
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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.