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Finding the Fourth Proportional to 602.84, 904.44 and 278.40

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Solution

The fourth proportional to 602.84, 904.44 and 278.40 is: 417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.84 : 904.44 = 278.40 : x
  2. Step 2: Convert to fraction form
    602.84/904.44 = 278.40/x
  3. Step 3: Cross multiply
    602.84x = 904.44 × 278.40
  4. Step 4: Simplify right side
    602.84x = 251,796.10
  5. Step 5: Solve for x
    x = 251,796.10/602.84
  6. Step 6: Final answer
    x = 417.68

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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.