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Finding the Fourth Proportional to 369, 509.54 and 277.48

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Solution

The fourth proportional to 369, 509.54 and 277.48 is: 383.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    369 : 509.54 = 277.48 : x
  2. Step 2: Convert to fraction form
    369/509.54 = 277.48/x
  3. Step 3: Cross multiply
    369x = 509.54 × 277.48
  4. Step 4: Simplify right side
    369x = 141,387.16
  5. Step 5: Solve for x
    x = 141,387.16/369
  6. Step 6: Final answer
    x = 383.16

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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.