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Finding the Fourth Proportional to 590.30, 813.90 and 459.08

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Solution

The fourth proportional to 590.30, 813.90 and 459.08 is: 632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.30 : 813.90 = 459.08 : x
  2. Step 2: Convert to fraction form
    590.30/813.90 = 459.08/x
  3. Step 3: Cross multiply
    590.30x = 813.90 × 459.08
  4. Step 4: Simplify right side
    590.30x = 373,645.21
  5. Step 5: Solve for x
    x = 373,645.21/590.30
  6. Step 6: Final answer
    x = 632.98

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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.