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Finding the Fourth Proportional to 875.58, 1,208.25 and 526.20

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Solution

The fourth proportional to 875.58, 1,208.25 and 526.20 is: 726.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.58 : 1,208.25 = 526.20 : x
  2. Step 2: Convert to fraction form
    875.58/1,208.25 = 526.20/x
  3. Step 3: Cross multiply
    875.58x = 1,208.25 × 526.20
  4. Step 4: Simplify right side
    875.58x = 635,781.15
  5. Step 5: Solve for x
    x = 635,781.15/875.58
  6. Step 6: Final answer
    x = 726.13

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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.