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Finding the Fourth Proportional to 690.37, 1,035.56 and 473.29

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Solution

The fourth proportional to 690.37, 1,035.56 and 473.29 is: 709.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.37 : 1,035.56 = 473.29 : x
  2. Step 2: Convert to fraction form
    690.37/1,035.56 = 473.29/x
  3. Step 3: Cross multiply
    690.37x = 1,035.56 × 473.29
  4. Step 4: Simplify right side
    690.37x = 490,117.83
  5. Step 5: Solve for x
    x = 490,117.83/690.37
  6. Step 6: Final answer
    x = 709.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.