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Finding the Fourth Proportional to 558.45, 838.35 and 529.74

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Solution

The fourth proportional to 558.45, 838.35 and 529.74 is: 795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.45 : 838.35 = 529.74 : x
  2. Step 2: Convert to fraction form
    558.45/838.35 = 529.74/x
  3. Step 3: Cross multiply
    558.45x = 838.35 × 529.74
  4. Step 4: Simplify right side
    558.45x = 444,107.53
  5. Step 5: Solve for x
    x = 444,107.53/558.45
  6. Step 6: Final answer
    x = 795.25

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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.