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Finding the Fourth Proportional to 372.44, 513.60 and 302.40

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Solution

The fourth proportional to 372.44, 513.60 and 302.40 is: 417.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.44 : 513.60 = 302.40 : x
  2. Step 2: Convert to fraction form
    372.44/513.60 = 302.40/x
  3. Step 3: Cross multiply
    372.44x = 513.60 × 302.40
  4. Step 4: Simplify right side
    372.44x = 155,312.64
  5. Step 5: Solve for x
    x = 155,312.64/372.44
  6. Step 6: Final answer
    x = 417.01

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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.