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Finding the Fourth Proportional to 698.15, 962.92 and 655.63

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Solution

The fourth proportional to 698.15, 962.92 and 655.63 is: 904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    698.15 : 962.92 = 655.63 : x
  2. Step 2: Convert to fraction form
    698.15/962.92 = 655.63/x
  3. Step 3: Cross multiply
    698.15x = 962.92 × 655.63
  4. Step 4: Simplify right side
    698.15x = 631,317.65
  5. Step 5: Solve for x
    x = 631,317.65/698.15
  6. Step 6: Final answer
    x = 904.27

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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.