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Finding the Fourth Proportional to 1,590.86, 2,386.51 and 495.33

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Solution

The fourth proportional to 1,590.86, 2,386.51 and 495.33 is: 743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.86 : 2,386.51 = 495.33 : x
  2. Step 2: Convert to fraction form
    1,590.86/2,386.51 = 495.33/x
  3. Step 3: Cross multiply
    1,590.86x = 2,386.51 × 495.33
  4. Step 4: Simplify right side
    1,590.86x = 1,182,110.62
  5. Step 5: Solve for x
    x = 1,182,110.62/1,590.86
  6. Step 6: Final answer
    x = 743.07

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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.