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Finding the Fourth Proportional to 701.07, 967.47 and 390.57

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Solution

The fourth proportional to 701.07, 967.47 and 390.57 is: 538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.07 : 967.47 = 390.57 : x
  2. Step 2: Convert to fraction form
    701.07/967.47 = 390.57/x
  3. Step 3: Cross multiply
    701.07x = 967.47 × 390.57
  4. Step 4: Simplify right side
    701.07x = 377,864.76
  5. Step 5: Solve for x
    x = 377,864.76/701.07
  6. Step 6: Final answer
    x = 538.98

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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.