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Finding the Fourth Proportional to 594.78, 890.64 and 478.59

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Solution

The fourth proportional to 594.78, 890.64 and 478.59 is: 716.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.78 : 890.64 = 478.59 : x
  2. Step 2: Convert to fraction form
    594.78/890.64 = 478.59/x
  3. Step 3: Cross multiply
    594.78x = 890.64 × 478.59
  4. Step 4: Simplify right side
    594.78x = 426,251.40
  5. Step 5: Solve for x
    x = 426,251.40/594.78
  6. Step 6: Final answer
    x = 716.65

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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.