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Finding the Fourth Proportional to 913.41, 1,370.84 and 528.93

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Solution

The fourth proportional to 913.41, 1,370.84 and 528.93 is: 793.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    913.41 : 1,370.84 = 528.93 : x
  2. Step 2: Convert to fraction form
    913.41/1,370.84 = 528.93/x
  3. Step 3: Cross multiply
    913.41x = 1,370.84 × 528.93
  4. Step 4: Simplify right side
    913.41x = 725,075.76
  5. Step 5: Solve for x
    x = 725,075.76/913.41
  6. Step 6: Final answer
    x = 793.81

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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.