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Finding the Fourth Proportional to 501.71, 751.65 and 490.77

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Solution

The fourth proportional to 501.71, 751.65 and 490.77 is: 735.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.71 : 751.65 = 490.77 : x
  2. Step 2: Convert to fraction form
    501.71/751.65 = 490.77/x
  3. Step 3: Cross multiply
    501.71x = 751.65 × 490.77
  4. Step 4: Simplify right side
    501.71x = 368,887.27
  5. Step 5: Solve for x
    x = 368,887.27/501.71
  6. Step 6: Final answer
    x = 735.27

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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.