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Finding the Fourth Proportional to 368.32, 508.14 and 251.98

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Solution

The fourth proportional to 368.32, 508.14 and 251.98 is: 347.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.32 : 508.14 = 251.98 : x
  2. Step 2: Convert to fraction form
    368.32/508.14 = 251.98/x
  3. Step 3: Cross multiply
    368.32x = 508.14 × 251.98
  4. Step 4: Simplify right side
    368.32x = 128,041.12
  5. Step 5: Solve for x
    x = 128,041.12/368.32
  6. Step 6: Final answer
    x = 347.64

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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.