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Finding the Fourth Proportional to 1,258, 1,887.16 and 346

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Solution

The fourth proportional to 1,258, 1,887.16 and 346 is: 519.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258 : 1,887.16 = 346 : x
  2. Step 2: Convert to fraction form
    1,258/1,887.16 = 346/x
  3. Step 3: Cross multiply
    1,258x = 1,887.16 × 346
  4. Step 4: Simplify right side
    1,258x = 652,957.36
  5. Step 5: Solve for x
    x = 652,957.36/1,258
  6. Step 6: Final answer
    x = 519.04

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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.