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Finding the Fourth Proportional to 836.80, 1,154.88 and 526.24

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Solution

The fourth proportional to 836.80, 1,154.88 and 526.24 is: 726.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.80 : 1,154.88 = 526.24 : x
  2. Step 2: Convert to fraction form
    836.80/1,154.88 = 526.24/x
  3. Step 3: Cross multiply
    836.80x = 1,154.88 × 526.24
  4. Step 4: Simplify right side
    836.80x = 607,744.05
  5. Step 5: Solve for x
    x = 607,744.05/836.80
  6. Step 6: Final answer
    x = 726.27

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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.