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Finding the Fourth Proportional to 1,133.37, 1,563.57 and 740.37

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Solution

The fourth proportional to 1,133.37, 1,563.57 and 740.37 is: 1,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.37 : 1,563.57 = 740.37 : x
  2. Step 2: Convert to fraction form
    1,133.37/1,563.57 = 740.37/x
  3. Step 3: Cross multiply
    1,133.37x = 1,563.57 × 740.37
  4. Step 4: Simplify right side
    1,133.37x = 1,157,620.32
  5. Step 5: Solve for x
    x = 1,157,620.32/1,133.37
  6. Step 6: Final answer
    x = 1,021.40

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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.