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Finding the Fourth Proportional to 590.81, 885.38 and 435.51

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Solution

The fourth proportional to 590.81, 885.38 and 435.51 is: 652.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.81 : 885.38 = 435.51 : x
  2. Step 2: Convert to fraction form
    590.81/885.38 = 435.51/x
  3. Step 3: Cross multiply
    590.81x = 885.38 × 435.51
  4. Step 4: Simplify right side
    590.81x = 385,589.67
  5. Step 5: Solve for x
    x = 385,589.67/590.81
  6. Step 6: Final answer
    x = 652.65

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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.