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Finding the Fourth Proportional to 558.32, 770.16 and 470.84

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Solution

The fourth proportional to 558.32, 770.16 and 470.84 is: 649.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.32 : 770.16 = 470.84 : x
  2. Step 2: Convert to fraction form
    558.32/770.16 = 470.84/x
  3. Step 3: Cross multiply
    558.32x = 770.16 × 470.84
  4. Step 4: Simplify right side
    558.32x = 362,622.13
  5. Step 5: Solve for x
    x = 362,622.13/558.32
  6. Step 6: Final answer
    x = 649.49

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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.