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Finding the Fourth Proportional to 1,153.02, 1,590.77 and 704.77

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Solution

The fourth proportional to 1,153.02, 1,590.77 and 704.77 is: 972.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.02 : 1,590.77 = 704.77 : x
  2. Step 2: Convert to fraction form
    1,153.02/1,590.77 = 704.77/x
  3. Step 3: Cross multiply
    1,153.02x = 1,590.77 × 704.77
  4. Step 4: Simplify right side
    1,153.02x = 1,121,126.97
  5. Step 5: Solve for x
    x = 1,121,126.97/1,153.02
  6. Step 6: Final answer
    x = 972.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.