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Finding the Fourth Proportional to 1,477.54, 2,215.99 and 437.26

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Solution

The fourth proportional to 1,477.54, 2,215.99 and 437.26 is: 655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.54 : 2,215.99 = 437.26 : x
  2. Step 2: Convert to fraction form
    1,477.54/2,215.99 = 437.26/x
  3. Step 3: Cross multiply
    1,477.54x = 2,215.99 × 437.26
  4. Step 4: Simplify right side
    1,477.54x = 968,963.79
  5. Step 5: Solve for x
    x = 968,963.79/1,477.54
  6. Step 6: Final answer
    x = 655.80

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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.