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Finding the Fourth Proportional to 479.37, 715.02 and 401.43

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Solution

The fourth proportional to 479.37, 715.02 and 401.43 is: 598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.37 : 715.02 = 401.43 : x
  2. Step 2: Convert to fraction form
    479.37/715.02 = 401.43/x
  3. Step 3: Cross multiply
    479.37x = 715.02 × 401.43
  4. Step 4: Simplify right side
    479.37x = 287,030.48
  5. Step 5: Solve for x
    x = 287,030.48/479.37
  6. Step 6: Final answer
    x = 598.77

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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.