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Finding the Fourth Proportional to 558.12, 835.68 and 314.28

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Solution

The fourth proportional to 558.12, 835.68 and 314.28 is: 470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.12 : 835.68 = 314.28 : x
  2. Step 2: Convert to fraction form
    558.12/835.68 = 314.28/x
  3. Step 3: Cross multiply
    558.12x = 835.68 × 314.28
  4. Step 4: Simplify right side
    558.12x = 262,637.51
  5. Step 5: Solve for x
    x = 262,637.51/558.12
  6. Step 6: Final answer
    x = 470.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.