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Finding the Fourth Proportional to 596.63, 893.55 and 390.69

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Solution

The fourth proportional to 596.63, 893.55 and 390.69 is: 585.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    596.63 : 893.55 = 390.69 : x
  2. Step 2: Convert to fraction form
    596.63/893.55 = 390.69/x
  3. Step 3: Cross multiply
    596.63x = 893.55 × 390.69
  4. Step 4: Simplify right side
    596.63x = 349,101.05
  5. Step 5: Solve for x
    x = 349,101.05/596.63
  6. Step 6: Final answer
    x = 585.12

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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.