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Finding the Fourth Proportional to 340.00, 469.36 and 278.49

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Solution

The fourth proportional to 340.00, 469.36 and 278.49 is: 384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.00 : 469.36 = 278.49 : x
  2. Step 2: Convert to fraction form
    340.00/469.36 = 278.49/x
  3. Step 3: Cross multiply
    340.00x = 469.36 × 278.49
  4. Step 4: Simplify right side
    340.00x = 130,710.67
  5. Step 5: Solve for x
    x = 130,710.67/340.00
  6. Step 6: Final answer
    x = 384.45

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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.