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Finding the Fourth Proportional to 703.55, 970.01 and 553.91

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Solution

The fourth proportional to 703.55, 970.01 and 553.91 is: 763.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.55 : 970.01 = 553.91 : x
  2. Step 2: Convert to fraction form
    703.55/970.01 = 553.91/x
  3. Step 3: Cross multiply
    703.55x = 970.01 × 553.91
  4. Step 4: Simplify right side
    703.55x = 537,292.70
  5. Step 5: Solve for x
    x = 537,292.70/703.55
  6. Step 6: Final answer
    x = 763.69

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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.