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Finding the Fourth Proportional to 841.35, 1,160.87 and 509.77

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Solution

The fourth proportional to 841.35, 1,160.87 and 509.77 is: 703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.35 : 1,160.87 = 509.77 : x
  2. Step 2: Convert to fraction form
    841.35/1,160.87 = 509.77/x
  3. Step 3: Cross multiply
    841.35x = 1,160.87 × 509.77
  4. Step 4: Simplify right side
    841.35x = 591,776.70
  5. Step 5: Solve for x
    x = 591,776.70/841.35
  6. Step 6: Final answer
    x = 703.37

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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.