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Finding the Fourth Proportional to 374.08, 515.52 and 314.98

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Solution

The fourth proportional to 374.08, 515.52 and 314.98 is: 434.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.08 : 515.52 = 314.98 : x
  2. Step 2: Convert to fraction form
    374.08/515.52 = 314.98/x
  3. Step 3: Cross multiply
    374.08x = 515.52 × 314.98
  4. Step 4: Simplify right side
    374.08x = 162,378.49
  5. Step 5: Solve for x
    x = 162,378.49/374.08
  6. Step 6: Final answer
    x = 434.07

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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.