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Finding the Fourth Proportional to 916.93, 1,375.06 and 368.93

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Solution

The fourth proportional to 916.93, 1,375.06 and 368.93 is: 553.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.93 : 1,375.06 = 368.93 : x
  2. Step 2: Convert to fraction form
    916.93/1,375.06 = 368.93/x
  3. Step 3: Cross multiply
    916.93x = 1,375.06 × 368.93
  4. Step 4: Simplify right side
    916.93x = 507,300.89
  5. Step 5: Solve for x
    x = 507,300.89/916.93
  6. Step 6: Final answer
    x = 553.26

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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.