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Finding the Fourth Proportional to 594.25, 891.37 and 390.11

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Solution

The fourth proportional to 594.25, 891.37 and 390.11 is: 585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.25 : 891.37 = 390.11 : x
  2. Step 2: Convert to fraction form
    594.25/891.37 = 390.11/x
  3. Step 3: Cross multiply
    594.25x = 891.37 × 390.11
  4. Step 4: Simplify right side
    594.25x = 347,727.89
  5. Step 5: Solve for x
    x = 347,727.89/594.25
  6. Step 6: Final answer
    x = 585.16

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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.