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Finding the Fourth Proportional to 677.79, 933.60 and 530.16

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Solution

The fourth proportional to 677.79, 933.60 and 530.16 is: 730.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.79 : 933.60 = 530.16 : x
  2. Step 2: Convert to fraction form
    677.79/933.60 = 530.16/x
  3. Step 3: Cross multiply
    677.79x = 933.60 × 530.16
  4. Step 4: Simplify right side
    677.79x = 494,957.38
  5. Step 5: Solve for x
    x = 494,957.38/677.79
  6. Step 6: Final answer
    x = 730.25

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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.