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Finding the Fourth Proportional to 561.16, 841.68 and 346.12

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Solution

The fourth proportional to 561.16, 841.68 and 346.12 is: 519.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.16 : 841.68 = 346.12 : x
  2. Step 2: Convert to fraction form
    561.16/841.68 = 346.12/x
  3. Step 3: Cross multiply
    561.16x = 841.68 × 346.12
  4. Step 4: Simplify right side
    561.16x = 291,322.28
  5. Step 5: Solve for x
    x = 291,322.28/561.16
  6. Step 6: Final answer
    x = 519.14

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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.