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Finding the Fourth Proportional to 368.76, 552.53 and 260.32

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Solution

The fourth proportional to 368.76, 552.53 and 260.32 is: 390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.76 : 552.53 = 260.32 : x
  2. Step 2: Convert to fraction form
    368.76/552.53 = 260.32/x
  3. Step 3: Cross multiply
    368.76x = 552.53 × 260.32
  4. Step 4: Simplify right side
    368.76x = 143,834.61
  5. Step 5: Solve for x
    x = 143,834.61/368.76
  6. Step 6: Final answer
    x = 390.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.