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Finding the Fourth Proportional to 1,175.09, 1,762.63 and 297.60

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Solution

The fourth proportional to 1,175.09, 1,762.63 and 297.60 is: 446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.09 : 1,762.63 = 297.60 : x
  2. Step 2: Convert to fraction form
    1,175.09/1,762.63 = 297.60/x
  3. Step 3: Cross multiply
    1,175.09x = 1,762.63 × 297.60
  4. Step 4: Simplify right side
    1,175.09x = 524,558.69
  5. Step 5: Solve for x
    x = 524,558.69/1,175.09
  6. Step 6: Final answer
    x = 446.40

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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.