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Finding the Fourth Proportional to 672.30, 923.40 and 656.10

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Solution

The fourth proportional to 672.30, 923.40 and 656.10 is: 901.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.30 : 923.40 = 656.10 : x
  2. Step 2: Convert to fraction form
    672.30/923.40 = 656.10/x
  3. Step 3: Cross multiply
    672.30x = 923.40 × 656.10
  4. Step 4: Simplify right side
    672.30x = 605,842.74
  5. Step 5: Solve for x
    x = 605,842.74/672.30
  6. Step 6: Final answer
    x = 901.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.