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Finding the Fourth Proportional to 755.35, 1,041.29 and 530.60

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Solution

The fourth proportional to 755.35, 1,041.29 and 530.60 is: 731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.35 : 1,041.29 = 530.60 : x
  2. Step 2: Convert to fraction form
    755.35/1,041.29 = 530.60/x
  3. Step 3: Cross multiply
    755.35x = 1,041.29 × 530.60
  4. Step 4: Simplify right side
    755.35x = 552,506.51
  5. Step 5: Solve for x
    x = 552,506.51/755.35
  6. Step 6: Final answer
    x = 731.46

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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.