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Finding the Fourth Proportional to 313.07, 467.30 and 278.74

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Solution

The fourth proportional to 313.07, 467.30 and 278.74 is: 416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.07 : 467.30 = 278.74 : x
  2. Step 2: Convert to fraction form
    313.07/467.30 = 278.74/x
  3. Step 3: Cross multiply
    313.07x = 467.30 × 278.74
  4. Step 4: Simplify right side
    313.07x = 130,256.48
  5. Step 5: Solve for x
    x = 130,256.48/313.07
  6. Step 6: Final answer
    x = 416.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.