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Finding the Fourth Proportional to 670.06, 923.13 and 553.42

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Solution

The fourth proportional to 670.06, 923.13 and 553.42 is: 762.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.06 : 923.13 = 553.42 : x
  2. Step 2: Convert to fraction form
    670.06/923.13 = 553.42/x
  3. Step 3: Cross multiply
    670.06x = 923.13 × 553.42
  4. Step 4: Simplify right side
    670.06x = 510,878.60
  5. Step 5: Solve for x
    x = 510,878.60/670.06
  6. Step 6: Final answer
    x = 762.44

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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.