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Finding the Fourth Proportional to 711.56, 1,062.73 and 603.56

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Solution

The fourth proportional to 711.56, 1,062.73 and 603.56 is: 901.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.56 : 1,062.73 = 603.56 : x
  2. Step 2: Convert to fraction form
    711.56/1,062.73 = 603.56/x
  3. Step 3: Cross multiply
    711.56x = 1,062.73 × 603.56
  4. Step 4: Simplify right side
    711.56x = 641,421.32
  5. Step 5: Solve for x
    x = 641,421.32/711.56
  6. Step 6: Final answer
    x = 901.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.