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Finding the Fourth Proportional to 968.54, 1,336.60 and 526.45

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Solution

The fourth proportional to 968.54, 1,336.60 and 526.45 is: 726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.54 : 1,336.60 = 526.45 : x
  2. Step 2: Convert to fraction form
    968.54/1,336.60 = 526.45/x
  3. Step 3: Cross multiply
    968.54x = 1,336.60 × 526.45
  4. Step 4: Simplify right side
    968.54x = 703,648.41
  5. Step 5: Solve for x
    x = 703,648.41/968.54
  6. Step 6: Final answer
    x = 726.50

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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.