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Finding the Fourth Proportional to 841.86, 1,161.66 and 482.93

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Solution

The fourth proportional to 841.86, 1,161.66 and 482.93 is: 666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    841.86 : 1,161.66 = 482.93 : x
  2. Step 2: Convert to fraction form
    841.86/1,161.66 = 482.93/x
  3. Step 3: Cross multiply
    841.86x = 1,161.66 × 482.93
  4. Step 4: Simplify right side
    841.86x = 561,005.71
  5. Step 5: Solve for x
    x = 561,005.71/841.86
  6. Step 6: Final answer
    x = 666.39

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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.