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Finding the Fourth Proportional to 556.04, 767.64 and 346.28

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Solution

The fourth proportional to 556.04, 767.64 and 346.28 is: 478.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.04 : 767.64 = 346.28 : x
  2. Step 2: Convert to fraction form
    556.04/767.64 = 346.28/x
  3. Step 3: Cross multiply
    556.04x = 767.64 × 346.28
  4. Step 4: Simplify right side
    556.04x = 265,818.38
  5. Step 5: Solve for x
    x = 265,818.38/556.04
  6. Step 6: Final answer
    x = 478.06

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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.