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Finding the Fourth Proportional to 373.10, 558.30 and 340.70

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Solution

The fourth proportional to 373.10, 558.30 and 340.70 is: 509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.10 : 558.30 = 340.70 : x
  2. Step 2: Convert to fraction form
    373.10/558.30 = 340.70/x
  3. Step 3: Cross multiply
    373.10x = 558.30 × 340.70
  4. Step 4: Simplify right side
    373.10x = 190,212.81
  5. Step 5: Solve for x
    x = 190,212.81/373.10
  6. Step 6: Final answer
    x = 509.82

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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.