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Finding the Fourth Proportional to 968.75, 1,336.87 and 526.65

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Solution

The fourth proportional to 968.75, 1,336.87 and 526.65 is: 726.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.75 : 1,336.87 = 526.65 : x
  2. Step 2: Convert to fraction form
    968.75/1,336.87 = 526.65/x
  3. Step 3: Cross multiply
    968.75x = 1,336.87 × 526.65
  4. Step 4: Simplify right side
    968.75x = 704,058.23
  5. Step 5: Solve for x
    x = 704,058.23/968.75
  6. Step 6: Final answer
    x = 726.77

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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.