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Finding the Fourth Proportional to 434.32, 598.01 and 387.51

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Solution

The fourth proportional to 434.32, 598.01 and 387.51 is: 533.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    434.32 : 598.01 = 387.51 : x
  2. Step 2: Convert to fraction form
    434.32/598.01 = 387.51/x
  3. Step 3: Cross multiply
    434.32x = 598.01 × 387.51
  4. Step 4: Simplify right side
    434.32x = 231,733.45
  5. Step 5: Solve for x
    x = 231,733.45/434.32
  6. Step 6: Final answer
    x = 533.55

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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.