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Finding the Fourth Proportional to 693.04, 953.76 and 645.52

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Solution

The fourth proportional to 693.04, 953.76 and 645.52 is: 888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.04 : 953.76 = 645.52 : x
  2. Step 2: Convert to fraction form
    693.04/953.76 = 645.52/x
  3. Step 3: Cross multiply
    693.04x = 953.76 × 645.52
  4. Step 4: Simplify right side
    693.04x = 615,671.16
  5. Step 5: Solve for x
    x = 615,671.16/693.04
  6. Step 6: Final answer
    x = 888.36

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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.