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Finding the Fourth Proportional to 703.04, 970.68 and 556.40

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Solution

The fourth proportional to 703.04, 970.68 and 556.40 is: 768.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.04 : 970.68 = 556.40 : x
  2. Step 2: Convert to fraction form
    703.04/970.68 = 556.40/x
  3. Step 3: Cross multiply
    703.04x = 970.68 × 556.40
  4. Step 4: Simplify right side
    703.04x = 540,086.35
  5. Step 5: Solve for x
    x = 540,086.35/703.04
  6. Step 6: Final answer
    x = 768.22

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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.