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Finding the Fourth Proportional to 703.64, 970.44 and 470.72

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Solution

The fourth proportional to 703.64, 970.44 and 470.72 is: 649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.64 : 970.44 = 470.72 : x
  2. Step 2: Convert to fraction form
    703.64/970.44 = 470.72/x
  3. Step 3: Cross multiply
    703.64x = 970.44 × 470.72
  4. Step 4: Simplify right side
    703.64x = 456,805.52
  5. Step 5: Solve for x
    x = 456,805.52/703.64
  6. Step 6: Final answer
    x = 649.20

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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.