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Finding the Fourth Proportional to 508.07, 699.05 and 397.36

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Solution

The fourth proportional to 508.07, 699.05 and 397.36 is: 546.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.07 : 699.05 = 397.36 : x
  2. Step 2: Convert to fraction form
    508.07/699.05 = 397.36/x
  3. Step 3: Cross multiply
    508.07x = 699.05 × 397.36
  4. Step 4: Simplify right side
    508.07x = 277,774.51
  5. Step 5: Solve for x
    x = 277,774.51/508.07
  6. Step 6: Final answer
    x = 546.72

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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.