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Finding the Fourth Proportional to 387.19, 583.51 and 348.72

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Solution

The fourth proportional to 387.19, 583.51 and 348.72 is: 525.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.19 : 583.51 = 348.72 : x
  2. Step 2: Convert to fraction form
    387.19/583.51 = 348.72/x
  3. Step 3: Cross multiply
    387.19x = 583.51 × 348.72
  4. Step 4: Simplify right side
    387.19x = 203,479.86
  5. Step 5: Solve for x
    x = 203,479.86/387.19
  6. Step 6: Final answer
    x = 525.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.